INTRODUCTION. 



The object of this paper is to give the literature on 

 the Palaeozoic Crustacea and to aid students and palaeon- 

 tologists in their researches. It is the result of more or 

 less constant work during the past decade. It gives a 

 list of authors, and includes an index of the species de- 

 scribed in each work. 



I am well aware that the value of a work of this kind 

 depends upon the care and labor given to its compila- 

 tion. Every possible means of obtaining accurate in- 

 formation from a miscellaneous class of literature in 

 many languages has been used, and it is hoped that 

 there are but few errors and omissions. 



I would thank those into whose hands this paper may 

 fall for any information that would add to its value as a 

 working hand-book. 



A. W. VOGDES. 



San Francisco, Cal., January 1, 1893. 



